I have no idea if this will help or not, but I started Sugar on acupuncture when she started having spinal problems. (big help for that btw) I happened to mention to her acupuncture Dr that she also had heart problems, she had been on Lasix and Enalapril for a couple of years, and had just started Vetmedin. The acupuncturist started giving her a few needles in her "heart" points, and it helped. After a couple of months, she went back for a recheck with her cardiologist, and (per the ultrasound) the enlarged side of her heart had shrunk, enough that he lowered the dose of of her meds
So, like I said, I don't know if it would help Lazar or not, but you might talk to an acupuncture vet and see.